Three Internet - Unfiltered?

I'm leaving Virgin due to some poor service. I was with T-Mobile before and thought they were great, but on price I'm considering going to Three (basically, their unlimited data though I could manage with 2GB) and enough texts and minutes to easily see me through for under £20.

I was with Three a while ago and found the network 2G handover a bit flakey. Anyone know of current problems? Also, the internet was censored so I couldn't read loads of sites I wanted to. Does anyone know if this is still the case? Don't want to have to go through their awful call centre to get it changed, just want it to work.

Last time I tried that, it took 36 hours between them removing the old internet package and adding the unfiltered one (as if it's a thing and not a click-button on a computer), during which they tried to charge me over £50 for the data I'd used in that time! Took a LOT of arguing to get them to remove it. I left again after about 3 months.

I used T-Mobile on PAYG and their filter is a lot stricter than that of 3 (no gambling sites or even Youtube; anyway you can send a text to set the filter to moderate and it will let you watch Youtube that way).
You get a filter on adult content with 3 as well, but I bypassed it by changing the APN (this on PAYG).
Now that I am on a contract with them (The One Plan), I had it removed by the call centre.

I was with T-Mobile for a couple of years until last autumn and never had any issues. I also like their cheap roaming bundles for the EU. There was an adult block, but I just had to sign in and click to remove it. I'm a contract customer, there's really no need to filter for anyone clearly over 18!

3's filter was aggressive, couldn't get onto b3ta/reddit etc

When I was with 3 I had several problems with their call centre, who tried their best but call quality in actually speaking to them was abysmal and the systems they in place were awful, unclear and always resulted in me phoning them back. If I can get up and running in store and not have to deal with the call centre, then I'm happy.

Changing the APN in interesting and looks like it'll do the trick. Might give them another go purely on price, can always switch away again (which is why I stick with 30-day!)